Book Image

Information Security Handbook

By : Darren Death
Book Image

Information Security Handbook

By: Darren Death

Overview of this book

Having an information security mechanism is one of the most crucial factors for any organization. Important assets of organization demand a proper risk management and threat model for security, and so information security concepts are gaining a lot of traction. This book starts with the concept of information security and shows you why it’s important. It then moves on to modules such as threat modeling, risk management, and mitigation. It also covers the concepts of incident response systems, information rights management, and more. Moving on, it guides you to build your own information security framework as the best fit for your organization. Toward the end, you’ll discover some best practices that can be implemented to make your security framework strong. By the end of this book, you will be well-versed with all the factors involved in information security, which will help you build a security framework that is a perfect fit your organization’s requirements.
Table of Contents (19 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Network security


Securely configuring your network hardware and configurations will ensure that you have an effective and secure communication infrastructure. Bear in mind the following principles and guidelines:

  • Ports, protocols, and services:
    • Ensure that you extend the concepts of least privilege and least functionality to the network.
    • Block any outbound traffic that is not required as this can be used to exfiltrate data from your network.
    • The same goes for inbound traffic. If you do not need a port, protocol, or service to be open, close it.
  • Traffic monitoring:
    • Ensure that you are monitoring the outbound ports that you allow with a full packet capture and analysis capability to ensure that the traffic that is leaving your network is legitimate.
    • For encrypted traffic, add an SSL decrypter to your network. Run this traffic through your security tool suite, including your full packet capture tools, to detect and alert you to potential malware activity.
    • These tools should all roll up into your...